Blog

When to Plant Tomatoes in Franklin County, FL

Tomatoes are the most popular home garden crop, available in thousands of varieties from tiny cherries to massive beefsteaks. They are warm-season plants needing full sun.

Franklin County, Florida is in USDA Zone 8b. The average last spring frost is February 25 and the first fall frost is November 28, giving you a growing season of approximately 276 days.

At an elevation of 487 feet, Franklin County receives approximately 59.9 inches of rainfall annually with predominantly sand soil. Summer highs average 96ยฐF, so Tomatoes may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring โ€” great for early planting โ€” but Tomatoes will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Tomatoes root diseases.

Franklin County, FL (Zone 8b) Year-round
276 days
Last Spring Frost February 25
276 growing days
First Fall Frost November 28

Franklin County Soil Profile

Soil Type

Sand

Soil pH

4.9-6

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (139 days to spare)
Start indoors: Dec 21 Transplant: Feb 22 🍅 Harvest: Apr 26 – Jul 5
Recommended (50%) ✓ Fits season (129 days to spare)
Start indoors: Jan 7 Transplant: Mar 11 🍅 Harvest: May 13 – Jul 22
Safe Start (90%) ✓ Fits season (130 days to spare)
Start indoors: Jan 27 Transplant: Mar 31 🍅 Harvest: Jun 2 – Aug 11

Percentages indicate frost risk at transplant. The 70% safe window means there is a 30% chance of frost after transplant — suitable for cold-hardy crops or gardeners with frost protection. The 90% safe window is best for tender plants.

Soil Compatibility in Franklin County

How your county's soil matches Tomatoes's growing requirements.

Soil pH

Your soil pH (4.9โ€“6.0) is more acidic than Tomatoes prefers (6.0โ€“7.0). Add garden lime to raise pH.

Soil Texture

Sandy soil in Franklin County warms quickly in spring but drains fast. Tomatoes will need more frequent watering and regular compost additions to retain nutrients.

Drainage

Drainage is adequate for Tomatoes.

Organic Matter

Organic matter is low (1.6%). Add 2-3 inches of compost before planting Tomatoes.

How to Plant Tomatoes

0.5"
Planting Depth
24"
Between Plants
36"
Between Rows

Succession Planting Tomatoes

5
successive plantings in your 276-day season

Sow every 6.9 weeks. Last sowing by Sep 04 to harvest before frost.

Plant Water Budget

Plant needs
1.2″/week
Rainfall provides
0.9″/week
You supply
0.7″/week
Watering frequency 1-2 times/week
Season total 1,607 gal / 100 sq ft

Monthly Watering Guide for Tomatoes

Tomatoes needs approximately 1.2 inches of water per week (5.2" per month). Here's how your county's rainfall compares month by month.

Month Tomatoes Needs Rainfall You Supplement Action
Jan โ€” 2.6" 0" โ„๏ธ Dormant
Feb 5.2" 2.8" 2.4" ๐Ÿ’ง Light watering
Mar 5.2" 3.2" 2" ๐Ÿ’ง Light watering
Apr 5.2" 2.6" 2.6" ๐Ÿšฟ Regular watering
May 5.2" 4" 1.2" ๐Ÿ’ง Light watering
Jun 5.2" 7.6" 0" โœ… Rainfall sufficient
Jul 5.2" 9.2" 0" โœ… Rainfall sufficient
Aug 5.2" 10" 0" โœ… Rainfall sufficient
Sep 5.2" 7.4" 0" โœ… Rainfall sufficient
Oct 5.2" 4.9" 0.3" ๐Ÿ’ง Light watering
Nov 5.2" 2.9" 2.3" ๐Ÿ’ง Light watering
Dec โ€” 2.8" 0" โ„๏ธ Dormant

Water needs are for active growing months only (Febโ€“Nov in Franklin County). Supplement amounts are based on average rainfall โ€” actual needs vary with temperature, soil, and mulching.

Tomatoes Heat Requirements (GDD)

What are Growing Degree Days (GDD)?

Growing Degree Days measure the total warmth your plants receive during the growing season. Think of it as a "heat bank" โ€” every day above 50ยฐF deposits warmth that helps your plants grow.

Each plant needs a certain amount of accumulated heat to mature. If your county provides more GDD than the plant needs, it's a great fit. If it's close, you may want to choose faster-maturing varieties or start seeds indoors to get a head start.

Tomatoes needs ~1,595 GDD — county provides 6,094 GDD Excellent fit

Tomatoes Planting Timeline โ€” Franklin County, FL

Tomatoes Planting Calendar

Activity When Date Range
Start Indoors January 7 Jan 7 โ€“ Jan 21
Transplant Outdoors March 11 Mar 11 โ€“ Mar 25
Direct Sow March 4 Mar 4 โ€“ Mar 25
Harvest May 13 May 13 โ€“ Jul 22

Plant 0.5" deep ยท 24" apart ยท Rows 36" apart

Month-by-Month Timeline

MonthActivities
January Start Indoors
February โ€”
March Transplant Outdoors Direct Sow
April โ€”
May Harvest
June Harvest
July Harvest
August โ€”
September โ€”
October โ€”
November โ€”
December โ€”

Growing Conditions

โ˜€๏ธ Sun

Full Sun (6-8+ hours)

๐Ÿ’ง Water

1.2"/week ยท 1-2 times/week

๐Ÿ“… Days to Maturity

60โ€“85 days

๐Ÿงช Soil pH

Needs 6โ€“7 ยท Your soil: too_acidic

๐Ÿ—บ๏ธ USDA Zone

Zone 8b

๐Ÿ“† Growing Season

276 days in Franklin County

Growing Tips for Tomatoes in Franklin County

Direct sow Tomatoes outdoors after February 25 in Franklin County when soil has warmed and frost danger has passed.

Sandy soil in Franklin County dries quickly โ€” mulch Tomatoes with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.

With summer highs reaching 96ยฐF in Franklin County, provide afternoon shade for Tomatoes and water deeply in the morning.

Common pests for Tomatoes in this region include tomato hornworm and aphids. Use row covers early in the season and inspect plants weekly.

General growing tips

Start seeds indoors 6-8 weeks before last frost. Bury transplants deep to encourage rooting along the stem. Provide consistent moisture to prevent blossom end rot and cracking.

Recommended Tomatoes Varieties for Franklin County

Heat-set varieties that pollinate reliably above 90ยฐF

Solar Fire Florida 91 Phoenix Heat Wave II

Your long season supports large indeterminate heirloom types

Brandywine (80d) Cherokee Purple (80d) San Marzano (80d) Mortgage Lifter (85d)

Disease-resistant varieties for your humid climate

Mountain Merit (VF) Defiant (LB) Iron Lady (EB/LB/SF)

Companion Planting

Good Companions

Avoid Planting Near

  • Cabbage
  • Fennel
  • Potatoes

Check more plant combinations with our Companion Planting Checker →

๐ŸŒพ Save Your Own Tomatoes Seeds
Life Cycle Annual
Pollination Self-Pollinating
How to Collect Scoop seeds from ripe fruit; ferment 2-3 days to remove gel coating.
Storage Store airtight; viable 4-6 years at 35ยฐF, under 45% humidity.

Isolate 25 ft between varieties for purity. Use open-pollinated varieties for true-to-type seeds.

Frequently Asked Questions

When should I plant Tomatoes in Franklin County, FL?

Franklin County is in Zone 8b with an average last frost of February 25. Plan your Tomatoes planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Franklin County, FL?

Franklin County, Florida is in USDA Hardiness Zone 8b. The average last spring frost is February 25 and first fall frost is November 28.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Franklin County gardeners in Zone 8b organize planting dates, track what's growing, and never miss a planting window.

Get Your Free Garden Planner →

Free download. Plan your entire garden season in minutes.

Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Franklin County, FL. Local conditions may vary. Last updated: April 2026.